Martin South

CIK 1901227 · Chief Client Officer · last filed 2026-07-29

Martin South is a Chief Client Officer who has filed 19 SEC Form 4 insider transactions across 2 companies since 2022. The most recent filing shows the insider sold $1.3M of MRSH on Jul 29, 2026. Across all open-market trades the lifetime net is −$11.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$3.12M

Companies

2

Total Filings

19

Lifetime Open-Market Net

-$11.18M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
MRSH	Chief Client Officer	16,631	$187.58	$3.12M	-$1.35M	4	2026-07-29
MARSH & MCLENNAN COMPANIES, INC. (MMC) Delisted	President & CEO, Marsh	29,682	$182.62	$5.42M	-$9.83M	12	2025-03-05

Recent Filings

19 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-07-29	MRSH	Sell (S)	−7,100	-$1.35M	EDGAR
2026-07-28	MRSH	Notice (144)	−7,100	-$1.35M	EDGAR
2026-05-01	MRSH	Grant (A)	—	$0	EDGAR
2026-03-03	MRSH	Mixed	+6,470	-$1.50M	EDGAR
2026-02-26	MRSH	Grant (A)	—	$0	EDGAR
2025-03-05	MARSH & MCLENNAN COMPANIES, INC. (MMC) Delisted	Mixed	−2,000	-$3.79M	EDGAR
2025-03-04	MRSH	Notice (144)	−26,476	-$6.34M	EDGAR
2025-03-04	MARSH & MCLENNAN COMPANIES, INC. (MMC) Delisted	Mixed	+7,383	-$2.14M	EDGAR
2025-02-20	MARSH & MCLENNAN COMPANIES, INC. (MMC) Delisted	Grant (A)	—	$0	EDGAR
2024-12-17	MARSH & MCLENNAN COMPANIES, INC. (MMC) Delisted	Mixed	+2,692	$579.6K	EDGAR

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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.